For the 2010 Chevrolet Impala, the low-beam headlight uses an H11 bulb, while the high beam uses H9. The daytime running light is also listed as H9. The fog-light fitment includes both H11 LED and H16 LED options, so confirm the existing fog-light socket and housing before ordering.
For exterior lighting, the front turn signal and parking light use 4157NA. Front and rear side markers are listed as 194NA. The reverse light uses 921, while the tail and brake lights use 3057R; the rear turn signal uses 3057. The center stop light is an integrated LED unit.
Interior and utility locations include 578 bulbs for the dome and map lights, a 912 bulb for the trunk light, and a 37 bulb for the vanity light. License plate, step, ash, courtesy, and glove-box locations are listed with 194 or 7441 options, so match the replacement to the bulb currently installed.